Method of making lamp-tops



L. C. WHITE.

Cutting Lamp Screws, &c.

No. 9,256. Patented Sept. 7, 1852.

MMRN LUTHER C. IVHITE, OF MERIDEN, CONNECTICUT.

METHOD OF MAKING LAMP-TOPS, RIVETS, 8w.

Specification of Letters Patent N0. 9,256, dated September 7, 1852.

To all whom it may concern:

Be it known that I, LUTHER C. WHITE, of Meriden, in the county of New Haven and State of Connecticut, have invented a new and Improved Method of Making Lamp- Tops or Screws, Stoppers for Flasks, Rivets, and other similar Articles from Sheet Metal; and I dohereby declare that the same in described and represented in the following specification and drawings.

Lamp tops, stoppers, etc., when made by being cast and then finished in the usual manner are very expensive or if made of sheet metal and pressed into shape. in the usual maner with a cavity in the top they make a very unsightly appearance, are difficult to clean and are continually catching dirt and cinders from the wick; and rivets that have heretofore been made of sheet metal have been made in the form of a conical tube and when applied to use they leave a hole open entirely through them, so that they are only applicable to certain .purposes and to which their use has been confined.

By my invention the above mentioned and other articles of a-similar nature are made much better and cheaper, besides remedying all the defects enumerated, for I make them from sheet metal with a full flat or ornamented top, as may be desired, and without the unsightly cavity spoken of, so as to present a neat and handsome appearance and when used as rivets for trunks or other pur poses there is no hole through them. Consequently they are applicable to many purposes for which those that leave a hole would not answer; hence their superiority over such kinds.

To enable others skilled in the art to practice my improved method of making lamp tops and other articles of a similar nature I will proceed to describe the mode of operation, referring to the accompanying drawings, which form a part of this specification and in which the figures are sectional elevations of the tools used cut vertically through the center, except Figs. at and 11, which represent the article cut from the flat sheet of metal.

Figure 1 represents a die of a proper size and Fig. 2, a punch fitted to it. A sheet of brass, copper, or other suitable metal of a proper thickness in laid over this die and the punch is forced through it into the die cutting out the piece of metal represented in Figs. 3 and 4, which piece of metal is laid into the top of the die, Fig. 5, when the punch Fig. 6, is forced down so as to carry the piece of metal entirely through the die and convert it into a cup of the form represented in Fig. 7 I then take the cup formed by the last operation and anneal it and place its rim between the die F F and punch G, Fig. 8, and bring the presser H, Fig. 9, down upon the bottom of the cup, which presses it down and forces out the sides, forming the rim I I, Fig. 10, of two thicknesses of metal and the'middle and projection of one thickness, when the presser is raised and the punch G is raised and lowered, so as to release the article formed in the shape represented at Fig. 10, in which shape it may be used for a lamp top or stopper, and a screw may be out either upon the inside or outside to fit a screw on the article where it is to be used and the edge I I may be milled in the usual manner or otherwise, so that it may be turned with facility, and if used for a lamp top some holes may be made and tubes fastened into them in the usual manner for the wicks, or if it is used for a rivet it may be inserted into a hole of the proper size and the edge of the projection M M bent over by such tools as may be convenient, when it will be found to be a very eflicient rivet. I contemplate, that it may be fastened to any article in this way to ornament the same and that they will be the most desirable rivets for making trunks which have ever been invented, also that when the rivets are required of any considerable length that a piece may be cut in the form represented in Fig. 11, or such other form as will suit the purpose for which it is intended, the center part being large enough to form the head of the rivet and turn over, so as to make the edge of the head double all around and the projections being carried metal and the center and flange M M of one 10 thickness as described.

In testimony whereof, I have hereunto signed my name before two subscribing witnesses.

LUTHER C. WHITE.

Witnesses:

HIRAM FOSTER, B. S. STEDMAN. 

